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PDF LXM1615-03-03 Data sheet ( Hoja de datos )
| Número de pieza | LXM1615-03-03 | |
| Descripción | 3.6/5V 2W/ DIGITAL DIMMING CCFL INVERTER MODULE | |
| Fabricantes | Microsemi Corporation | |
| Logotipo |  |
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RangeMAX™
LXM1615-03-xx
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE
A MICROSEMI COMPANY
PRELIMINARY DATA SHEET
RangeMAX™ Wide Range Dimming, The resultant “burst drive” that
Single Output Inverter. The LXM1615 energizes the lamp was designed
series of Direct Drive CCFL (Cold specifically to ensure that no premature
Cathode Fluorescent Lamp) Inverter lamp degradation occurs (See the “How
Modules are specifically designed for RangeMAX Works” section).
driving 8.4” and smaller LCD backlight VBATT Voltage Range. The modules
lamps. They also target portable displays convert the DC voltage from a single li-
that rely on a single lithium-ion battery. ion battery (3.2-4.2V) or a fixed 5V
LXM1615 modules provide the supply directly to high-frequency, high-
designer with a vastly superior display voltage waves required to ignite and
brightness range. This brightness range is operate CCFL lamps.
achievable with virtually any LCD Direct Drive Technology. The
display.
modules design is based on a new Direct
RangeMAX Digital Dimming Drive topology, which provides a number
Technique. Digital dimming provides of cost and performance advantages.
flicker-free brightness control in any wide Additional Features. Other benefits
range (100:1+) dimming application.
of this new topology are fixed-frequency
The modules are available with a operation, secondary-side strike-voltage
dimming input that permits brightness regulation and both open and shorted lamp
control from either a DC voltage source or protection.
a PWM signal.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
RangeMAX Wide Range
Dimming
VBATT – Single Li-Ion Cell
Operation Or Fixed 5V
Easy to Use Brightness Control
Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation
Fixed Frequency Operation
PDA And Sub-Notebook
Computers
Portable Instrumentation
Target 8.4” And Smaller Panels
Smooth, Flicker Free 1-100%
Full-Range Brightness Control
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
Power Efficient, “Low
Brightness” Capability Allows
For Advanced Power
Management
3.2 - 4.2V
Li-Ion Battery
FOR LOWER VOLTAGE LAMPS
PDAs, Digital Cam eras,
Video Cam corder,
Instrum entation, Handheld GPS
CCFL
260 - 380VRMS
VBATT
VLAMP
Instrum entation, Sub Notebooks,
Digital Picture Fram es
4.5 - 5.5V FOR H IGHER VOLTAGE LAMPS
CCFL
350 - 515VRMS
PART NUMBER
LXM1615-03-01
LXM1615-03-02
LXM1615-03-03
LXM1615-03-04
OUTPUT CONNECTOR
JST SM02(8.0)B-BHS-1-TB
JST SM02B-BHSS-1-TB
Honda QZ-19-A3MYL #02
JST SM02(4.0)B-BHS-1-TB
INVERTER MATES DIRECTLY
TO PANEL CONNECTORS
BHR-03VS-1
BHSR-02VS-1
QZ-19-3F01
BHR-02VS-1
Copyright © 2000
Rev. 0.3d,2000-11-30
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
1 page  
RangeMAX™
LXM1615-03-xx
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE
A MICROSEMI COMPANY
PRELIMINARY DATA SHEET
HIGHLIGHTS (CONTINUED)
• Separate feedback loops for lamp current and open circuit
voltage regulation insure reliable strike under all operating
conditions, automatic over-voltage prevention with broken
or failed lamps, and accurate lamp current regulation.
• A single input will accommodate negative and positive
vertical sync pulses at any pulse width.
3.2V - 4.2V
or 5V
3.3V
DC
+3.3V
B R IT E
V
BATT
V
HI
LXM1615-03-xx
V SYN C
SYNC GND
V
LO
CCFL
TUBE
Figure 5 - Brightness Control
PW M Signal
from System
BRITE
P.W .
< 200µS
LXM1615-03-xx
0 < P.W. < 100% of period
• The Brightness control may be a voltage output DAC, or
other voltage source as shown in Figure 5. A 3.3V Logic
Level PWM signal from a micro-controller may also be
used as shown in Figure 5A.
• If synchronization to the video frame rate is desired,
connect the vertical sync pulse from the system video
controller to the VSYNC input. If no video
synchronization is desired, connect VSYNC to ground.
• If you need to turn the inverter ON/OFF remotely, use the
+3.3V Logic Supply pin.
• Connect VHI to high voltage wire from the lamp.
Connect VLO to the low voltage wire (wire with thinner
insulation). Never connect VLO to circuit ground as this
will defeat lamp current regulation. If both lamp wires
have heavy high voltage insulation, connect the longest
wire to VLO. This wire is typically white.
"#
$
Also available in higher power single lamp inverters
LXM1612-xx-xx, Dual Output LXM1621-01,
LXM1622-xx-xx and Quad Output LXM1641-01
versions for multiple lamp applications.
Figure 5A - PW M Brightness Control
% &'(!'
)
The LXM1615-03-xx output current can be adjusted lower
by changing the value of one resistor (R10) on the PCB.
The following table shows the new output current values:
4.0mArms
3.5mArms
3.0mArms
2.5mArms
2.0mArms
137K 1% (stock setting)
95.3K1%
68.1K1%
49.9K1%
36.5K1%
CN1
F1
R1
R2
R3
R4
C7
R5 C9 R6
C8
C10
R8
C4
U1
D1
C13
C14
C15
C16
C17
R11 R10
R18
R19
Preliminary Data – Information contained in this document is pre-production data and is proprietary to LinFinity. It
may not be modified in any way without the express written consent of LinFinity. Product referred to herein is offered
in sample form only and LinFinity reserves the right to change or discontinue this proposed product at any time.
Copyright © 2000
Rev. 0.3d,2000-11-30
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet LXM1615-03-03.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LXM1615-03-01 | 3.6/5V 2W/ DIGITAL DIMMING CCFL INVERTER MODULE | Microsemi Corporation |
| LXM1615-03-02 | 3.6/5V 2W/ DIGITAL DIMMING CCFL INVERTER MODULE | Microsemi Corporation |
| LXM1615-03-03 | 3.6/5V 2W/ DIGITAL DIMMING CCFL INVERTER MODULE | Microsemi Corporation |
| LXM1615-03-04 | 3.6/5V 2W/ DIGITAL DIMMING CCFL INVERTER MODULE | Microsemi Corporation |
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